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Gas Laws/Properties Review HChem

Total questions: 50

Worksheet time: 2hrs 20mins

Name
Class
Date
1.
In order to convert to Kelvin, you add ______ to the Celsius measurement.
a)
372
b)
273
c)
237
d)
732
2.
Which of the following would increase the (gas) pressure of a system?
a)
Increase the Temperature
b)
Pump in more gas
c)
Decrease the volume
d)
All of these
3.
You have a gas that has a pressure of 2 ATM and a volume of 10L.  What would be the new volume if the pressure was changed to 1 ATM?
a)
5 L
b)
20 L
c)
It would stay at 10L
d)
1 L
4.
What is 0 Kelvin known as
a)
No such thing
b)
Very cold
c)
Freezing point of Water
d)
Absolute Zero
5.
If a balloon is cooled what will happen to the volume?
a)
Volume will increase
b)
Volume will decrease
c)
Volume will not change
6.
Which container will have lower pressure?
a)
left
b)
right
c)
they both have the same pressure
7.
What is standard temperature?
a)
0K
b)
0oC
c)
173 K
d)
173.15 K
8.
Which of the following is NOT a value for standard pressure?
a)
101.3 kPa
b)
760 mm Hg
c)
1 atm
d)
1 torr
9.
If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?
a)
204 K
b)
200 K
c)
2046 K
d)
2000 K
10.
Consider a sample of oxygen gas at 27° C with a volume of 9.55L at a pressure if 2.97 atm.  The pressure is changed to 8.25 atm and the gas is heated to 125° C.  What’s the new volume? 
a)
4.56 L
b)
4.6 L
c)
15.9 L
d)
16 L
11.
If I have 5.6 liters of gas in a piston at a pressure of 1.5 atm and compress the gas until its volume is 4.8 L, what will the new pressure inside the piston be?
a)
1.75 atm
b)
1.8 atm
c)
1.3 atm
d)
1.29 atm
12.
A gas at 928 kpa, 129 C occupies a volume of 569 L. Calculate the volume at 319 kpa and 32 C.
a)
410.61 L
b)
418.18 L
c)
1100 L
d)
1400 L
13.
Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure. 
a)
0 K 
b)
107 K 
c)
207 K 
d)
307 K 
14.

A student measures the pressure and volume of an empty water bottle to be 1.4 atm and 2.3 L. She then decreases the pressure to 0.65 atm. What is the new volume?

a)

2.1 L

b)

5.0 L

c)

8.2 L

d)

3.9 L

15.

What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38°C to 123°C?

a)

0.9 atm

b)

2.1 atm

c)

1.6 atm

d)

3.4 atm

16.

Three gases are mixed together in a container with a total pressure of 4.8 atm. If two of the gases have pressures of 1.2 atm and 1.5 atm, what is the pressure of the third gas?

a)

2.5 atm

b)

1.8 atm

c)

2.1 atm

d)

1.3 atm

17.
Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.
a)
7.18 L 
b)
7.81 L
c)
4.63 L
d)
4.36 L
18.

Pressure is

a)

defined as the mass that an object exerts when at rest.

b)

not a measurable in gases.

c)

defined as the number of moles of substance divided by the mass of the substance.

d)

created by the force of the gas particles impacting the walls of the container.

19.

A sample of gas with a volume of 30.0 mL at 25.0oC is heated to 50.0oC. What is the new volume of the gas?

a)

60.0 mL

b)

15.0 mL

c)

27.5 mL

d)

32.5 mL

20.
A sample of gas has a volume of 0.600 L at 30°C and a pressure of 0.8 atm. What is the number of moles in this sample?
a)
0.2 mol
b)
0.02 mol
c)
14.4 mol
d)
145.4 mol
21.
A weather balloon has a volume of 105L at 0.97 atm when the temperature is 318K. What is the volume at 293K and 1.05 atm?
a)
89.4 L
b)
0.32 L
c)
93.8 L
d)
3.13 L
22.
At standard temperature and pressure, I have 48L of hydrogen gas. How many moles of gas do I have?
a)
0.5
b)
1
c)
2
d)
4
23.
The energy of an object as it is in motion is defined as
a)
Kinetic Theory
b)
Kinetic energy
c)
Potential energy
d)
Electric energy
24.
The temperature at which all molecular motion stops is
a)
-460 .C
b)
-273K
c)
0K
d)
0.C
25.
When a cold tire is inflated to a certain pressure and then is warmed up due to friction with the road, the pressure increases. This happens because the
a)
air molecules hit the walls of the tire less frequently
b)
rubber in the tires reacts with oxygen in the atmosphere
c)
air molecules speed up and collide with the tire walls more often
d)
air molecules diffuse rapidly through the walls of the tire.
26.
The random molecular motion of a substance is greatest when the substance is
a)
condensed
b)
frozen
c)
gas
d)
a liquid
27.
The kinetic theory of matter states that all of the particles that make up matter are constantly
a)
growing
b)
shrinking
c)
crying
d)
moving
28.
If container A is 10L and is under 5 atm of pressure and container B is 10L, but under 7 atm of pressure, what is true about the number of particles inside the containers?
a)
can not tell from the information
b)
they contain the same number of particles
c)
container A has less particles
d)
container B has less particles
29.
Which of the following is equivalent to 1,068kPa?
a)
7,516.45 mmHg
b)
7,814.2 torr
c)
155.0 psi
d)
11.3 atm
30.
A sample of gas measures 4.22 L at 120°C at 900 mmHg. What volume would it occupy at STP?
a)
2.48 L
b)
3.47 L
c)
5.13 L
d)
7.19 L
31.
Which of the following assumption of kinetic molecular theory describes why gases are extremely fluid?
a)
particles do  not attract or repel one another
b)
particles have elastic collisions
c)
gases are made of tiny particles that are far apart
d)
particles travel in straight line, continuous rapid, random motion
32.
If I have 4 containers with equal volume and the containers are under the pressures listed below. Which container would have the lowest temperature?
Container A: 760 torr
Container B: 1000 torr
Container C: 1500 torr
Container D: 2000 torr 
a)
Container A
b)
Container B
c)
Container C
d)
Container D
33.

A balloon filled with 0.25 mol of He(g) at 273 K and 1 atm is allowed to rise through the atmosphere. Which of the following explains what happens to the volume of the balloon as it rises from ground level to an altitude where the air temperature is 220 K and the air pressure is 0.1 atm?

a)

The volume will increase because the decrease in air pressure will have a greater effect than the decrease in temperature.

b)

The volume will remain unchanged because of the counteracting effects of the decrease in temperature and the decrease in air pressure.

c)

The volume will decrease because the decrease in temperature will have a greater effect than the decrease in air pressure.

d)

It cannot be determined whether the volume of the balloon will increase, decrease, or remain the same without knowing the initial volume of the balloon.

34.

The reaction between NO(g) and O2(g) to produce NO2(g) in a rigid reaction vessel is represented in the diagram above. The pressure inside the container is recorded using a pressure gauge. Which of the following statements correctly predicts the change in pressure as the reaction goes to completion at constant temperature, and provides the correct explanation?

a)

The pressure will increase because the product molecules have a greater mass than either of the reactant molecules.

b)

The pressure will decrease because there are fewer molecules of product than reactants.

c)

The pressure will decrease because the product molecules have a lower average speed than the reactant molecules.

d)

The pressure will not change because the total mass of the product molecules is the same as the total mass of the reactant molecules.

35.

If the volume of a confined gas is doubled while the temperature remains constant, what change (if any) would be observed in the pressure?

a)

It would be half as large.

b)

It would double.

c)

It would be four times as large.

d)

It would remain the same.

36.

A given mass of a gas in a rigid container is heated from 100°C to 500°C. Which of the following responses best describes what will happen to the pressure of the gas? The pressure will

a)

decrease by a factor of five.

b)

increase by a factor of five.

c)

increase by a factor of about two.

d)

increase by a factor of about eight.

37.
A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg. The partial pressure of hydrogen is 220 mmHg and that of nitrogen is 410 mmHg. What is the partial pressure of water vapor?
a)
234 mmHg
b)
1.37 mmHg
c)
2.64 mmHg
d)
1, 494 mmHg
38.

The partial pressures of CH4, N2, and O2 in a sample of gas were found to be 135 mm Hg, 508 mm Hg, and 571 mm Hg, respectively. Calculate the mole fraction of nitrogen.

a)

20.4

b)

0.470

c)

0.418

d)

0.751

39.
Dalton's Law states...
a)
that at a constant temperature the volume of a confined ideal gas varies inversely with its pressure.
b)
that the total pressure exerted by the mixture of non-reactive gases is equal to the sum of the partial pressures of individual gases
c)
how gases tend to expand when heated
d)
that the density of an ideal gas at constant pressure varies inversely with the absolute temperature of the gas.
40.

A sealed vessel contains 0.5 moles of oxygen, 0.1 moles of carbon dioxide, and 0.4 moles of nitrogen gas. The total pressure of the gas mixture is 5 atmospheres. What is the partial pressure of the carbon dioxide?

a)

0.5 atm

b)

2.5 atm

c)

2.0 atm

d)

0.1 atm

41.

A gaseous mixture contains 5.0 moles of nitrogen and 10.0 moles of helium. The total pressure in the container is 3.0 atmospheres. What is the partial pressure of the nitrogen?

a)

1 atm

b)

0.5 atm

c)

3.0 atm

d)

2.0 atm

42.

A mixture of two gases, Xe and CO, has the properties listed below.What is the PXe for this mixture?nXe=0.026moles

nCO=0.012moles

PT=220torr

a)

150 torr

b)

200.torr

c)

10.torr

d)

55 torr

43.

Which gas has a greater pressure?

a)

air

b)

methane

c)

The gas pressures are equal

44.

If the atmospheric pressure is 740 mmHg, what is the pressure of the methane gas?

a)

740 mmHg

b)

770 mmHg

c)

710 mmHg

d)

30 mmHg

45.

If the air pressure is 750 mmHg, what is the pressure of Gas B?

a)

695 mmHg

b)

805 mmHg

c)

750 mmHg

d)

55 mmHg

46.

Which gas has a greater pressure?

a)

Gas C

b)

Air

c)

The gas pressures are equal

47.

What is the pressure of the sample of gas trapped in the open-tube mercury manometer shown below if atmospheric pressure is 736 mmHg and h = 9.2 cm?

a)

0.057 atm

b)

1.1 atm

c)

2.8 atm

d)

3.6 atm

48.
What pressure in mmHg is equal to 1.43 kPa?
a)
1.43 mmHg
b)
10.7 mmHg
c)
101.325 mmHg
d)
760 mmHg
49.
What pressure in kPa is equal to 725mmHg?
a)
5350 kPa
b)
725 kPa
c)
96.7 kPa
d)
1450 kPa
50.
What pressure in kPa is equal to 2.65 atm?
a)
268 kPa
b)
0.0261 kPa
c)
39.0 kPa
d)
265 kPa

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